. >> ifill: jeffrey brown examines new concerns over syria's chemical weapons capability and what, if anything, the u.s. can do about it. >> woodruff: from florida, hari sreenivasan has the story of endangered coral reefs. many of them dying because ocean temperatures are rising and the waters are more acidic. >> i remember seeing fields of elk horn coral that you couldn't see through it and you couldn't see beyond it and those same areas are dead you know 99% dead. ♪ >> ifill: and we close with a remembrance of jazz great dave brubeck who died today, one day shy of his 92nd birthday. >> woodruff: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: the nation's third- largest bank, citigroup, announced big job cuts as it continues to scale back in the wake of the financial crisis. the 11,000 employees to be